AeroVironment, F5 Networks, Romarco, Wynn: U.S. Equity Movers

bought South Africa���s Bradford McCormack & Associates for an undisclosed sum to enter Africa���s largest economy. Krispy Kreme Doughnuts Inc. (KKD US) declined 21 percent, the most since September 2007, to $5.56. The doughnut chain posted...